Lick the back and push hard...
Royal Mail has used several 'innovative' printing methods for a set of stamps issued today to mark the 100th anniversary of the Nobel Institute and the first Nobel Prizes.
The methods to be used are:
- A scratch-and-smell panel with a eucalyptus scent on a 40p stamp honouring prizes in medicine and physiology.
- A hologram on the 65p stamp honouring prizes in physics.
- Microprinting of T.S. Eliot’s poem The Addressing of Cats on the 45p stamp honouring literature.
- Thermochromic ink on the second-class non-denominated stamp for chemistry.
- Engraving, or intaglio, on the first-class stamp honouring economics. NB:This is not innovative. Intaglio was used for the Penny Black in 1840.
- Embossing on the European-rate stamp for the Nobel Peace prize. NB:Again not innovative. This technique was first used for British stamps in 1847.